mantle drag

geology

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Last updated

July 16, 2026

Quick Summary

Mantle drag refers to the resistance encountered by tectonic plates as they move across the Earth's mantle. This movement is primarily driven by convection currents within the mantle, fueled by heat from radioactive decay.12

While convection is the main driver, other forces contribute:
* Slab pull: The weight of a dense oceanic plate sinking at a subduction zone pulls the rest of the plate along.21
* Ridge push: Gravitational force at higher-elevation mid-ocean ridges pushes plates away as they cool and become denser.21

Mantle drag itself can influence plate speed, but the exact relationship between mantle flow and surface plate movement is still a subject of ongoing research. Seismic tomography helps visualize these deep Earth processes by creating images of the mantle's interior.23

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plate tectonics
Mantle convection
…plates, a force known as mantle drag. However, the mantle flow pattern at depth does not appear to be reflected in the surface movements of the plates.
Read More
…plates, a force known as mantle drag. However, the mantle flow pattern at depth does not appear to be reflected in the surface movements of the plates.
Read More